Source Rock Evaluation through Well Logging Data and Pyrolysis Analysis: A Study of the Kurra Chine Formation in Well-6, Peshkhabir Oil Field, Kurdistan, Iraq

The volume of hydrocarbon exists in the reservoir is directly related to the quantity of the hydrocarbon generated and expelled from the source rock. Accurate evaluation of source rock is important for hydrocarbon production planning and subsurface resource prediction. This study evaluates the source rocks of the shale zones within the Kurra Chine Formation using well-logging data and Rock-Eval pyrolysis analysis for Well-6 in the Peshkhabir Oil Field, located at Zakho, Northern Iraq. Comprehensive well logging data of Well-6 in the Peshkhabir Oil Field, and sixteen cutting samples were selected for this study. The result indicates that the total organic carbon wt.% of Well-6 ranges from 0.39 - 1.62 %, classifying the Kurra Chine as a good source rock in the shale zones. The Generation potential ranges from 1.02 – 6.562, additionally confirming the source rock potentiality through wireline logs. The S1 value for most samples ranged between 2.68 – 3.16, indicating favourable hydrocarbon presence and suggesting a good quality source rock. The level of maturity, represented by thermal maturity, ranges between 400 °C – 420 °C for most samples, indicating them as immature to marginally mature. Furthermore, the kerogen types predominately fall under type III, based on the relationship between hydrogen index and thermal maturity.